package com.wooophone.common.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;

public class FileUtil {
	private static final int BUFFER_SIZE = 1024 * 1024;

	public static void copy(File oldFile, File targetFile) throws IOException {
		InputStream in = null;
		OutputStream out = null;
		try {
			in = new BufferedInputStream(new FileInputStream(oldFile),
					BUFFER_SIZE);
			out = new BufferedOutputStream(new FileOutputStream(targetFile),
					BUFFER_SIZE);
			byte[] buffer = new byte[BUFFER_SIZE];
			int length = 0;
			while ((length = in.read(buffer)) > 0) {
				out.write(buffer, 0, length);
			}
		} finally {
			if (null != in) {
				in.close();
			}
			if (null != out) {
				out.close();
			}
		}
	}
}
